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<div class="title">ADC.cpp</div>  </div>
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<a href="_a_d_c_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160; <span class="comment">/* ADC Library created by Pedro Villanueva</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * It implements all functions of the Teensy 3.0 internal ADC</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Some of the code was extracted from the file analog.c included in the distribution of Teensduino by PJRC.COM</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160; <span class="comment">/* TODO</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">  * Stuff related to the conversion speed and power. Useful if you want more speed or to save power.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">  * Function to measure more that 1 pin consecutively</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">  *</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">  * bugs:</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">  * - analog timer at 16 bits resolution goes from 0 to +1.65 and then jumps to -1.65 to 0</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">  * - comparison values don&#39;t work in 16 bit differential mode (they are twice what you write)</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_a_d_c_8h.html">ADC.h</a>&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">// ADC interrupt function calls a function to add values in the ring buffer</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">// if there is at least one analog timer, if not, it does nothing.</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">// implemented as weak so that an user can redefine it</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="_a_d_c_8cpp.html#a515b2edb92623afe10d1360601de1fba">   24</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="_a_d_c_8cpp.html#a515b2edb92623afe10d1360601de1fba">__attribute__</a>((weak)) adc0_isr(<span class="keywordtype">void</span>) {</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    <a class="code" href="class_a_d_c.html#acd2190a0fffb121216e5f5bb2d84fc8e">ADC::analogTimer_ADC_Callback</a>();</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;}</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment">// static vars need to be restated here</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;uint8_t ADC::calibrating;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;uint8_t ADC::var_enableInterrupts;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;uint8_t ADC::analog_config_bits;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;uint32_t ADC::analog_max_val;</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;uint8_t ADC::analog_num_average;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;uint8_t ADC::analog_reference_internal;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="keyword">const</span> uint8_t ADC::ledPin = 13;</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;ADC::ADC_Config ADC::adc_config; <span class="comment">// store the adc config</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;uint8_t ADC::adcWasInUse; <span class="comment">// was the adc in use before an analog timer call?</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="keyword">const</span> uint8_t ADC::channel2sc1a[]= {</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    5, 14, 8, 9, 13, 12, 6, 7, 15, 4,</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    0, 19, 3, 21, 26, 22};</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="keyword">const</span> uint8_t ADC::sc1a2channel[]= { <span class="comment">// new version, gives directly the pin number</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    34, 0, 0, 36, 23, 14, 20, 21, 16, 17, 0, 0, 19, 18, <span class="comment">// 0-13</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    15, 22, 0, 0, 0, 35, 0, 37, 39, 0, 0, 0, 38}; <span class="comment">// 14-26</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">// struct with the analog timers</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;ADC::AnalogTimer *ADC::analogTimer[];</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment">// pointer to isr adc</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;void (*<a class="code" href="class_a_d_c.html#acd2190a0fffb121216e5f5bb2d84fc8e">ADC::analogTimer_ADC_Callback</a>)(void);</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment">// the functions for the analog timers</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;ADC::ISR ADC::analogTimerCallback[] = {</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    ADC::analogTimerCallback0,</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    ADC::analogTimerCallback1,</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    ADC::analogTimerCallback2</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;};</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment">/* Constructor</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a60b6e21403b1f30984f63832c0562960">   66</a></span>&#160;<a class="code" href="class_a_d_c.html#a60b6e21403b1f30984f63832c0562960">ADC::ADC</a>() {</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="comment">// default settings: 10 bits resolution (in analog_init), 4 averages, vcc reference, no interrupts and single-ended</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    analog_config_bits = 0;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    analog_max_val = 1024;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    analog_num_average = 4;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    analog_reference_internal = 0;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    var_enableInterrupts = 0;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="comment">// itinialize analog timers</span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    <span class="keywordflow">for</span>(i=0; i&lt;<a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a>; i++) {</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        analogTimer[i] = <span class="keyword">new</span> AnalogTimer;</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        <span class="comment">//analogTimer[i]-&gt;pinNumber = -1;</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    }</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="comment">//*analogTimer = new AnalogTimer[MAX_ANALOG_TIMERS]; // doesn&#39;t work for some reason</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    <span class="comment">// call our init</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    ADC::analog_init();</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    <span class="comment">// point ADC callback to function that does nothing</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    <span class="comment">// when the analogTimers are in use, this will point to the correct ADC_callback</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    <a class="code" href="class_a_d_c.html#acd2190a0fffb121216e5f5bb2d84fc8e">analogTimer_ADC_Callback</a> = &amp;voidFunction;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;}</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment">/* Destructor</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="class_a_d_c.html#aefd878291d0c14aa524df99af5a63148">   93</a></span>&#160;<a class="code" href="class_a_d_c.html#aefd878291d0c14aa524df99af5a63148">ADC::~ADC</a>() {</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="comment">//dtor</span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    <span class="keywordflow">for</span>(i=0; i&lt;<a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a>; i++) {</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        <span class="keyword">delete</span> analogTimer[i];</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    }</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;}</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="comment">/* Sets up all initial configurations and starts calibration</span></div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="keywordtype">void</span> ADC::analog_init(uint32_t config)</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;{</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        VREF_TRM = 0x60;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        VREF_SC = 0xE1;         <span class="comment">// enable 1.2 volt ref</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        <span class="keywordflow">if</span> (analog_reference_internal) {</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;                ADC0_SC2 |= ADC_SC2_REFSEL(1); <span class="comment">// 1.2V ref</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;                ADC0_SC2 |= ADC_SC2_REFSEL(0); <span class="comment">// vcc/ext ref</span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        }</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    <span class="comment">// set resolution</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(10);</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    <span class="comment">// number of averages</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        <a class="code" href="class_a_d_c.html#aa80d9ebc6a60605e1b9a25f2db8734e9">setAveraging</a>(analog_num_average);</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    <span class="comment">// begin calibration</span></div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        calibrate();</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;}</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="keywordtype">void</span> ADC::calibrate() {</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    ADC0_SC3 |= ADC_SC3_CAL;</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;        <span class="comment">// calibration works best when averages are 32 and speed is less than 4 MHz</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;        calibrating = 1;</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;}</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="comment">/* Waits until calibration is finished and writes the corresponding registers</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="keywordtype">void</span> ADC::wait_for_cal(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;{</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        uint16_t sum;</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;        <span class="keywordflow">while</span> (ADC0_SC3 &amp; ADC_SC3_CAL) { <span class="comment">// Bit ADC_SC3_CAL in register ADC0_SC3 cleared when calib. finishes.</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;                <span class="comment">// wait</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;                <span class="comment">//serial_print(&quot;.&quot;);</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        }</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        __disable_irq();</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        <span class="keywordflow">if</span> (calibrating) {</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;                <span class="comment">//serial_print(&quot;\n&quot;);</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;                sum = ADC0_CLPS + ADC0_CLP4 + ADC0_CLP3 + ADC0_CLP2 + ADC0_CLP1 + ADC0_CLP0;</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;                sum = (sum / 2) | 0x8000;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                ADC0_PG = sum;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;                <span class="comment">//serial_print(&quot;ADC0_PG = &quot;);</span></div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;                <span class="comment">//serial_phex16(sum);</span></div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;                <span class="comment">//serial_print(&quot;\n&quot;);</span></div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;                sum = ADC0_CLMS + ADC0_CLM4 + ADC0_CLM3 + ADC0_CLM2 + ADC0_CLM1 + ADC0_CLM0;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;                sum = (sum / 2) | 0x8000;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                ADC0_MG = sum;</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;                <span class="comment">//serial_print(&quot;ADC0_MG = &quot;);</span></div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;                <span class="comment">//serial_phex16(sum);</span></div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;                <span class="comment">//serial_print(&quot;\n&quot;);</span></div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;                calibrating = 0;</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;        }</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;        __enable_irq();</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;}</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;<span class="comment">/* Set the voltage reference you prefer, default is vcc</span></div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;<span class="comment">*   It needs to recalibrate</span></div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a3871e90219238c6319c8b6bf801b5fd7">  173</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#a3871e90219238c6319c8b6bf801b5fd7">ADC::setReference</a>(uint8_t type)</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;{</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        <span class="keywordflow">if</span> (type) {</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;                <span class="comment">// internal reference requested</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;                <span class="keywordflow">if</span> (!analog_reference_internal) {</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;                        analog_reference_internal = 1;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;                        <span class="keywordflow">if</span> (calibrating) ADC0_SC3 = 0; <span class="comment">// cancel cal</span></div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;                        calibrate();</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;                }</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;                <span class="comment">// vcc or external reference requested</span></div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;                <span class="keywordflow">if</span> (analog_reference_internal) {</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;                        analog_reference_internal = 0;</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;                        <span class="keywordflow">if</span> (calibrating) ADC0_SC3 = 0; <span class="comment">// cancel cal</span></div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;                        calibrate();</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;                }</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;        }</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;}</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;<span class="comment">/* Change the resolution of the measurement</span></div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;<span class="comment">*  For single-ended measurements: 8, 10, 12 or 16 bits.</span></div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;<span class="comment">*  For differential measurements: 9, 11, 13 or 16 bits.</span></div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="comment">*  If you want something in between (11 bits single-ended for example) select the inmediate higher</span></div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="comment">*  and shift the result one to the right.</span></div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">  199</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">ADC::setResolution</a>(uint8_t bits)</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;{</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;    uint8_t config;</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    <span class="keywordflow">if</span> (bits &lt;8) {</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;                config = 8;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (bits &gt; 16) {</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;                config = 16;</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;                config = bits;</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;        }</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    <span class="comment">// if the new res is the &quot;same&quot; as the old, update analog_config_bits, but do nothing else</span></div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;        <span class="keywordflow">if</span>( (config==8 &amp;&amp; analog_config_bits==9) || (config==9 &amp;&amp; analog_config_bits==8)</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;        || (config==10 &amp;&amp; analog_config_bits==11) || (config==11 &amp;&amp; analog_config_bits==10)</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;        || (config==12 &amp;&amp; analog_config_bits==13) || (config==13 &amp;&amp; analog_config_bits==12) ) {</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;        analog_config_bits = config;</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (config != analog_config_bits) { <span class="comment">// change res</span></div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;        analog_config_bits = config;</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;        <span class="comment">// conversion resolution and frequency</span></div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;        <span class="keywordflow">if</span> ( (analog_config_bits == 8) || (analog_config_bits == 9) )  {</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;            ADC0_CFG1 = ADC0_CFG1_24MHZ + ADC_CFG1_MODE(0); <span class="comment">// 0 clock divide + Input clock: 24 MHz (run at 24 MHz) + Conversion mode: 8 bit + Sample time: Short</span></div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;            ADC0_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(3); <span class="comment">// b channels + Sample time 2 cycles (I think that if ADC_CFG1_ADLSMP isn&#39;t set, then ADC_CFG2_ADLSTS doesn&#39;t matter)</span></div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;            analog_max_val = 256; <span class="comment">// diff mode 9 bits has 1 bit for sign, so max value is the same as single 8 bits</span></div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( (analog_config_bits == 10 )|| (analog_config_bits == 11) ) { <span class="comment">// total clock cycles to complete conversion: 3 ADCK + 5 BUS + 4 averages*( 20 + 2 ADCK ) = 7.8 us</span></div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;            ADC0_CFG1 = ADC0_CFG1_12MHZ + ADC_CFG1_MODE(2) + ADC_CFG1_ADLSMP; <span class="comment">// Clock divide: 1/2 + Input clock: 24 MHz (run at 12 MHz) + Conversion mode: 10 bit + Sample time: Long</span></div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;            ADC0_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(3); <span class="comment">// b channels + Sample time 2 extra clock cycles</span></div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;            analog_max_val = 1024;</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( (analog_config_bits == 12 )|| (analog_config_bits == 13) ) {</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;            ADC0_CFG1 = ADC0_CFG1_12MHZ + ADC_CFG1_MODE(1) + ADC_CFG1_ADLSMP; <span class="comment">// Clock divide: 1/2 + Input clock: 24 MHz (run at 12 MHz) + Conversion mode: 12 bit + Sample time: Long</span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;            ADC0_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(2); <span class="comment">// b channels + Sample time: 6 extra clock cycles</span></div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;            analog_max_val = 4096;</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;            ADC0_CFG1 = ADC0_CFG1_12MHZ + ADC_CFG1_MODE(3) + ADC_CFG1_ADLSMP;  <span class="comment">//Clock divide: 1/2 + Input clock: 24 MHz (run at 12 MHz) + Conversion mode: 16 bit + Sample time: Long</span></div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;            ADC0_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(2); <span class="comment">// b channels + Sample time: 6 extra clock cycles</span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;            analog_max_val = 65536;</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;        }</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;                <span class="comment">// no recalibration is needed when changing the resolution, p. 619</span></div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;                <span class="comment">// but it&#39;s needed if we change the frequency...</span></div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;                <span class="keywordflow">if</span> (calibrating) ADC0_SC3 = 0; <span class="comment">// cancel cal</span></div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;                calibrate(); <span class="comment">// re-cal</span></div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        } <span class="comment">// end if change res</span></div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;}</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;<span class="comment">/* Returns the resolution of the ADC</span></div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">  248</a></span>&#160;uint8_t <a class="code" href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">ADC::getResolution</a>() {</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;    <span class="keywordflow">return</span> analog_config_bits;</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;}</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="comment">/* Returns the maximum value for a measurement, that is 2^resolution</span></div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00255"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a254cfc7c511bc29447d2a692433efe24">  255</a></span>&#160;uint32_t <a class="code" href="class_a_d_c.html#a254cfc7c511bc29447d2a692433efe24">ADC::getMaxValue</a>() {</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;    <span class="keywordflow">return</span> analog_max_val;</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;}</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;<span class="comment">/* Set the number of averages: 0, 4, 8, 16 or 32.</span></div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"><a class="line" href="class_a_d_c.html#aa80d9ebc6a60605e1b9a25f2db8734e9">  263</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#aa80d9ebc6a60605e1b9a25f2db8734e9">ADC::setAveraging</a>(uint8_t num)</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;{</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;        <span class="keywordflow">if</span> (calibrating) wait_for_cal();</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;        <span class="keywordflow">if</span> (num &lt;= 1) {</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;                num = 0;</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;                ADC0_SC3 &amp;= !ADC_SC3_AVGE;</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (num &lt;= 4) {</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;                num = 4;</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;                ADC0_SC3 |= ADC_SC3_AVGE + ADC_SC3_AVGS(0);</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (num &lt;= 8) {</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;                num = 8;</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;                ADC0_SC3 |= ADC_SC3_AVGE + ADC_SC3_AVGS(1);</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (num &lt;= 16) {</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;                num = 16;</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;                ADC0_SC3 |= ADC_SC3_AVGE + ADC_SC3_AVGS(2);</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;                num = 32;</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;                ADC0_SC3 |= ADC_SC3_AVGE + ADC_SC3_AVGS(3);</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;        }</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;        analog_num_average = num;</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;}</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;<span class="comment">/* Enable interrupts: An ADC Interrupt will be raised when the conversion is completed</span></div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;<span class="comment">*  (including hardware averages and if the comparison (if any) is true).</span></div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a66a26ded71b7b938e3fc8826c4579092">  290</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#a66a26ded71b7b938e3fc8826c4579092">ADC::enableInterrupts</a>() {</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;    var_enableInterrupts = 1;</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;    NVIC_ENABLE_IRQ(IRQ_ADC0);</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;}</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;<span class="comment">/* Disable interrupts</span></div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00298"></a><span class="lineno"><a class="line" href="class_a_d_c.html#ad8acae7988973bdede138deea567623a">  298</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#ad8acae7988973bdede138deea567623a">ADC::disableInterrupts</a>() {</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    var_enableInterrupts = 0;</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;    NVIC_DISABLE_IRQ(IRQ_ADC0);</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;}</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;<span class="comment">/* Enable DMA request: An ADC DMA request will be raised when the conversion is completed</span></div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;<span class="comment">*  (including hardware averages and if the comparison (if any) is true).</span></div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a10b9e674ed487b81160687e38fafbb59">  307</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#a10b9e674ed487b81160687e38fafbb59">ADC::enableDMA</a>() {</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;    ADC0_SC2 |= ADC_SC2_DMAEN;</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;}</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;</div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;<span class="comment">/* Disable ADC DMA request</span></div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a58af22e8f95c1d2b1560153f906d1038">  314</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#a58af22e8f95c1d2b1560153f906d1038">ADC::disableDMA</a>() {</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;    ADC0_SC2 &amp;= !ADC_SC2_DMAEN;</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;}</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;<span class="comment">/* Enable the compare function: A conversion will be completed only when the ADC value</span></div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;<span class="comment">*  is &gt;= compValue (greaterThan=1) or &lt; compValue (greaterThan=0)</span></div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;<span class="comment">*  Call it after changing the resolution</span></div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;<span class="comment">*  Use with interrupts or poll conversion completion with isADC_Complete()</span></div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a5bc29134a1079cc1c232a436c3778f88">  324</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#a5bc29134a1079cc1c232a436c3778f88">ADC::enableCompare</a>(int16_t compValue, <span class="keywordtype">int</span> greaterThan) {</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;    ADC0_SC2 |= ADC_SC2_ACFE | greaterThan*ADC_SC2_ACFGT;</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;    ADC0_CV1 = compValue;</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;}</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;<span class="comment">/* Enable the compare function: A conversion will be completed only when the ADC value</span></div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;<span class="comment">*  is inside (insideRange=1) or outside (=0) the range given by (lowerLimit, upperLimit),</span></div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;<span class="comment">*  including (inclusive=1) the limits or not (inclusive=0).</span></div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;<span class="comment">*  See Table 31-78, p. 617 of the freescale manual.</span></div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;<span class="comment">*  Call it after changing the resolution</span></div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;<span class="comment">*  Use with interrupts or poll conversion completion with isComplete()</span></div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"><a class="line" href="class_a_d_c.html#aee940d66774b13a343e85c358ee6cd45">  336</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#aee940d66774b13a343e85c358ee6cd45">ADC::enableCompareRange</a>(int16_t lowerLimit, int16_t upperLimit, <span class="keywordtype">int</span> insideRange, <span class="keywordtype">int</span> inclusive) {</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;    <span class="keywordflow">if</span>(insideRange &amp;&amp; inclusive) { <span class="comment">// True if value is inside the range, including the limits. CV1 &lt;= CV2 and ACFGT=1</span></div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;        ADC0_CV1 = lowerLimit;</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;        ADC0_CV2 = upperLimit;</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;        ADC0_SC2 |= ADC_SC2_ACFE | ADC_SC2_ACFGT | ADC_SC2_ACREN;</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(insideRange &amp;&amp; !inclusive) {<span class="comment">// True if value is inside the range, excluding the limits. CV1 &gt; CV2 and ACFGT=0</span></div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;        ADC0_CV2 = lowerLimit;</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;        ADC0_CV1 = upperLimit;</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;        ADC0_SC2 |= ADC_SC2_ACFE | ADC_SC2_ACREN;</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(!insideRange &amp;&amp; inclusive) { <span class="comment">// True if value is outside of range or is equal to either limit. CV1 &gt; CV2 and ACFGT=1</span></div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;        ADC0_CV2 = lowerLimit;</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;        ADC0_CV1 = upperLimit;</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;        ADC0_SC2 |= ADC_SC2_ACFE | ADC_SC2_ACFGT | ADC_SC2_ACREN;</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(!insideRange &amp;&amp; !inclusive) { <span class="comment">// True if value is outside of range and not equal to either limit. CV1 &gt; CV2 and ACFGT=0</span></div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;        ADC0_CV1 = lowerLimit;</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;        ADC0_CV2 = upperLimit;</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;        ADC0_SC2 |= ADC_SC2_ACFE | ADC_SC2_ACREN;</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;    }</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;}</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;<span class="comment">/* Disable the compare function</span></div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"><a class="line" href="class_a_d_c.html#ad48e3b4b69170965fc4fe70ef042c099">  360</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#ad48e3b4b69170965fc4fe70ef042c099">ADC::disableCompare</a>() {</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;    ADC0_SC2 &amp;= !ADC_SC2_ACFE;</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;}</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;<span class="comment">/* Reads the analog value of the pin.</span></div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;<span class="comment">* It waits until the value is read and then returns the result.</span></div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;<span class="comment">* If a comparison has been set up and fails, it will return ADC_ERROR_VALUE.</span></div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;<span class="comment">* Set the resolution, number of averages and voltage reference using the appropriate functions.</span></div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00370"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a67ad2a6883cfffb1e4876e678ba7bb8a">  370</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_a_d_c.html#a67ad2a6883cfffb1e4876e678ba7bb8a">ADC::analogRead</a>(uint8_t pin)</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;{</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;        uint16_t result;</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;        <span class="keywordflow">if</span> (pin &gt;= 14 &amp;&amp; pin &lt;= 39) {</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;                <span class="keywordflow">if</span> (pin &lt;= 23) {</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;                        pin -= 14;  <span class="comment">// 14-23 are A0-A9</span></div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;                } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pin &gt;= 34) {</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;                        pin -= 24;  <span class="comment">// 34-37 are A10-A13, 38 is temp sensor, 39 is vref</span></div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;                }</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a810b46bdaa73057d834142229111adc5">ADC_ERROR_VALUE</a>;   <span class="comment">// all others are invalid</span></div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;    }</div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;        <span class="keywordflow">if</span> (calibrating) wait_for_cal();</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;        uint8_t res = <a class="code" href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">getResolution</a>();</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;        uint8_t diffRes = 0; <span class="comment">// is the new resolution different from the old one?</span></div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;    <span class="comment">// vars to save the current state of the ADC in case it&#39;s in use</span></div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;    uint32_t savedSC1A, savedSC2, savedSC3, savedCFG1, savedCFG2, savedRes;</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;    uint8_t wasADCInUse = <a class="code" href="class_a_d_c.html#ae9f0fe4ddfa32cd8eb5a6fb085c06668">isConverting</a>(); <span class="comment">// is the ADC running now?</span></div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;    <span class="keywordflow">if</span>(wasADCInUse) { <span class="comment">// this means we&#39;re interrupting a conversion</span></div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;        <span class="comment">// save the current conversion config, we don&#39;t want any other interrupts messing up the configs</span></div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;        __disable_irq();</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;        <span class="comment">//GPIOC_PSOR = 1&lt;&lt;5;</span></div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;        savedRes = res;</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;        savedSC1A = ADC0_SC1A;</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;        savedCFG1 = ADC0_CFG1;</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;        savedSC2 = ADC0_SC2;</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;        savedSC3 = ADC0_SC3;</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;        <span class="comment">// change the comparison values if interrupting a 16 bits and diff mode</span></div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;        <span class="keywordflow">if</span>(res==16 &amp;&amp; <a class="code" href="class_a_d_c.html#a21b77150e3b960a4232a755143c64be2">isDifferential</a>()) {</div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;            ADC0_CV1 /= 2;</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;            ADC0_CV2 /= 2;</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;        }</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;        <span class="comment">// disable continuous mode in case analogRead is interrupting a continuous mode</span></div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;        ADC0_SC3 &amp;= !ADC_SC3_ADCO;</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;        __enable_irq(); </div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;    }</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;    <span class="comment">// if the resolution is incorrect (i.e. 9, 11 or 13) silently correct it</span></div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;        <span class="keywordflow">if</span>( (res==9) || (res==11) || (res==13) ) {</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;        <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(res-1);</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;        diffRes = 1; <span class="comment">// resolution changed</span></div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;        }</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;    __disable_irq();</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;    ADC0_SC1A = channel2sc1a[pin] + var_enableInterrupts*ADC_SC1_AIEN; <span class="comment">// start conversion on pin and with interrupts enabled if requested</span></div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;        __enable_irq();</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;        <span class="keywordflow">while</span> (1) {</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;                __disable_irq();</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;                <span class="keywordflow">if</span> ((ADC0_SC1A &amp; ADC_SC1_COCO)) { <span class="comment">// conversion completed</span></div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;                        result = ADC0_RA;</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;                        <span class="comment">// if we interrupted a conversion, set it again</span></div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;            <span class="keywordflow">if</span> (wasADCInUse) {</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;                <span class="comment">//GPIOC_PCOR = 1&lt;&lt;5;</span></div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;                <span class="comment">// restore ADC config, and restart conversion</span></div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;                <span class="keywordflow">if</span>(diffRes) <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(savedRes); <span class="comment">// don&#39;t change res if isn&#39;t necessary</span></div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;                <span class="keywordflow">if</span>(res==16 &amp;&amp; ((savedSC1A &amp; ADC_SC1_DIFF) &gt;&gt; 5) )  { <span class="comment">// change back the comparison values if interrupting a 16 bits and diff mode</span></div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;                    ADC0_CV1 *= 2;</div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;                    ADC0_CV2 *= 2;</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;                }</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;                ADC0_CFG1 = savedCFG1;</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;                ADC0_SC2 = savedSC2 &amp; 0x7F; <span class="comment">// restore first 8 bits</span></div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;                ADC0_SC3 = savedSC3 &amp; 0xF; <span class="comment">// restore first 4 bits</span></div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;                ADC0_SC1A = savedSC1A &amp; 0x7F; <span class="comment">// restore first 8 bits</span></div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;            }</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;                        __enable_irq();</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;                        <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;                } <span class="keywordflow">else</span> <span class="keywordflow">if</span>( ((ADC0_SC2 &amp; ADC_SC2_ADACT) == 0) &amp;&amp; ((ADC0_SC1A &amp; ADC_SC1_COCO) == 0) ) { <span class="comment">// comparison was false</span></div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;                    <span class="comment">// we needed to check that ADACT wasn&#39;t 0 because COCO just turned 1.</span></div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;                    <span class="comment">// if we interrupted a conversion, set it again</span></div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;            <span class="keywordflow">if</span> (wasADCInUse) {</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;                <span class="comment">//GPIOC_PCOR = 1&lt;&lt;5;</span></div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;                <span class="comment">// restore ADC config, and restart conversion</span></div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;                <span class="keywordflow">if</span>(diffRes) <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(savedRes); <span class="comment">// don&#39;t change res if isn&#39;t necessary</span></div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;                <span class="keywordflow">if</span>(res==16 &amp;&amp; ((savedSC1A &amp; ADC_SC1_DIFF) &gt;&gt; 5) )  { <span class="comment">// change back the comparison values if interrupting a 16 bits and diff mode</span></div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;                    ADC0_CV1 *= 2;</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;                    ADC0_CV2 *= 2;</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;                }</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;                ADC0_CFG1 = savedCFG1;</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;                ADC0_SC2 = savedSC2 &amp; 0x7F; <span class="comment">// restore first 8 bits</span></div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;                ADC0_SC3 = savedSC3 &amp; 0xF; <span class="comment">// restore first 4 bits</span></div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;                ADC0_SC1A = savedSC1A &amp; 0x7F; <span class="comment">// restore first 8 bits</span></div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;            }</div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;                    <span class="comment">// comparison was false, we return an error value to indicate this</span></div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;                    __enable_irq();</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;            <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a810b46bdaa73057d834142229111adc5">ADC_ERROR_VALUE</a>;</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;                } <span class="comment">// end if comparison false</span></div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;                __enable_irq();</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;                yield();</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;        } <span class="comment">// end while</span></div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;</div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;} <span class="comment">// analogRead</span></div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;</div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;<span class="comment">/* Reads the differential analog value of two pins (pinP - pinN)</span></div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;<span class="comment">* It waits until the value is read and then returns the result</span></div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;<span class="comment">* If a comparison has been set up and fails, it will return -70000</span></div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;<span class="comment">* Set the resolution, number of averages and voltage reference using the appropriate functions</span></div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00487"></a><span class="lineno"><a class="line" href="class_a_d_c.html#ad3a40837cf36ad7c7c1efe635523c4c4">  487</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_a_d_c.html#ad3a40837cf36ad7c7c1efe635523c4c4">ADC::analogReadDifferential</a>(uint8_t pinP, uint8_t pinN)</div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;{</div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;        int16_t result;</div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;</div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;        <span class="comment">// check for calibration before setting channels,</span></div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;        <span class="comment">// because conversion will start as soon as we write to ADC0_SC1A</span></div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;        <span class="keywordflow">if</span> (calibrating) wait_for_cal();</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;        uint8_t res = <a class="code" href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">getResolution</a>();</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;        uint8_t diffRes = 0; <span class="comment">// is the new resolution different from the old one?</span></div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;</div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;    <span class="comment">// vars to saved the current state of the ADC in case it&#39;s in use</span></div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;    uint32_t savedSC1A, savedSC2, savedSC3, savedCFG1, savedCFG2, savedRes;</div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;    uint8_t adcWasInUse = <a class="code" href="class_a_d_c.html#ae9f0fe4ddfa32cd8eb5a6fb085c06668">isConverting</a>(); <span class="comment">// is the ADC running now?</span></div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;    <span class="keywordflow">if</span>(adcWasInUse) { <span class="comment">// this means we&#39;re interrupting a conversion</span></div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;        <span class="comment">// save the current conversion config, we don&#39;t want any other interrupts messing up the configs</span></div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;        __disable_irq();</div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;        <span class="comment">//GPIOC_PSOR = 1&lt;&lt;5;</span></div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;        savedRes = res;</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;        savedSC1A = ADC0_SC1A;<span class="comment">// &amp; 0x7F; // get first 7 bits</span></div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;        savedCFG1 = ADC0_CFG1;</div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;        savedCFG2 = ADC0_CFG2;</div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;        savedSC2 = ADC0_SC2;<span class="comment">// &amp; 0x7F; // get first 7 bits</span></div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;        savedSC3 = ADC0_SC3;<span class="comment">// &amp; 0xF; // get first 4 bits</span></div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;        <span class="comment">// disable continuous mode in case analogReadDifferential is interrupting a continuous mode</span></div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;        ADC0_SC3 &amp;= !ADC_SC3_ADCO;</div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;        __enable_irq(); </div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;</div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;    }</div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;</div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;    <span class="comment">// if the resolution is incorrect (i.e. 8, 10 or 12) silently correct it</span></div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;        <span class="keywordflow">if</span>( (res==8) || (res==10) || (res==12) ) {</div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;        <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(res+1);</div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;    diffRes = 1; <span class="comment">// resolution changed</span></div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(res==16) {</div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;        ADC0_CV1 /= 2; <span class="comment">// correct also compare function in case it was enabled</span></div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;        ADC0_CV2 /= 2;</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;    }</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;</div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;    <span class="comment">// once ADC0_SC1A is set, conversion will start, enable interrupts if requested</span></div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;        <span class="keywordflow">if</span> ( (pinP == A10) &amp;&amp; (pinN == A11) ) { <span class="comment">// DAD0 selected, pins 34 and 35</span></div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;        __disable_irq();</div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;            ADC0_SC1A = ADC_SC1_DIFF + 0x0 + var_enableInterrupts*ADC_SC1_AIEN;</div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;        __enable_irq();</div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( (pinP == A12) &amp;&amp; (pinN == A13) ) { <span class="comment">// DAD3 selected, pins 36 and 37</span></div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;            __disable_irq();</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;            ADC0_SC1A = ADC_SC1_DIFF + 0x3 + var_enableInterrupts*ADC_SC1_AIEN;</div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;            __enable_irq();</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;            __enable_irq(); <span class="comment">// just in case we disabled them in the if above.</span></div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#af181c4b5c617516517400c427494e7e7">ADC_ERROR_DIFF_VALUE</a>; <span class="comment">// all others aren&#39;t capable of differential measurements, perhaps return analogRead(pinP)-analogRead(pinN)?</span></div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;    }</div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;    <span class="keywordflow">while</span> (1) {</div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;                __disable_irq();</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;                <span class="keywordflow">if</span> ((ADC0_SC1A &amp; ADC_SC1_COCO)) { <span class="comment">// conversion completed</span></div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;                        result = ADC0_RA;</div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;                        <span class="comment">// if we interrupted a conversion, set it again</span></div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;            <span class="keywordflow">if</span> (adcWasInUse) {</div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;                <span class="comment">//GPIOC_PTOR = 1&lt;&lt;5;</span></div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;</div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;                <span class="comment">// restore ADC config, and restart conversion</span></div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;                <span class="keywordflow">if</span>(diffRes) <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(savedRes); <span class="comment">// don&#39;t change res if isn&#39;t necessary</span></div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;                <span class="keywordflow">if</span>(res==16) {</div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;                    ADC0_CV1 *= 2; <span class="comment">// change back the comparison values</span></div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;                    ADC0_CV2 *= 2;</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;                }</div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;                ADC0_CFG1 = savedCFG1;</div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;                ADC0_CFG2 = savedCFG2;</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;                ADC0_SC2 = savedSC2 &amp; 0x7F;</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;                ADC0_SC3 = savedSC3 &amp; 0xF;</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;                ADC0_SC1A = savedSC1A &amp; 0x7F;</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;            }</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;                        __enable_irq();</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;                        <span class="keywordflow">if</span> (result &amp; (1&lt;&lt;15)) { <span class="comment">// number is negative</span></div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;                result |= 0xFFFF0000; <span class="comment">// result is a 32 bit integer</span></div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;            }</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;                        <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;                } <span class="keywordflow">else</span> <span class="keywordflow">if</span>( ((ADC0_SC2 &amp; ADC_SC2_ADACT) == 0) &amp;&amp; ((ADC0_SC1A &amp; ADC_SC1_COCO) == 0) ) {</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;                    <span class="comment">// we needed to check that ADACT wasn&#39;t 0 because COCO just turned 1.</span></div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;</div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;                    <span class="comment">// if we interrupted a conversion, set it again</span></div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;            <span class="keywordflow">if</span> (adcWasInUse) {</div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;                <span class="comment">//GPIOC_PTOR = 1&lt;&lt;5;</span></div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;</div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;                <span class="comment">// restore ADC config, and restart conversion</span></div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;                <span class="keywordflow">if</span>(diffRes) <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(savedRes); <span class="comment">// don&#39;t change res if isn&#39;t necessary</span></div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;                <span class="keywordflow">if</span>(res==16) {</div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;                    ADC0_CV1 *= 2; <span class="comment">// change back the comparison values</span></div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;                    ADC0_CV2 *= 2;</div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;                }</div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;                ADC0_CFG1 = savedCFG1;</div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;                ADC0_CFG2 = savedCFG2;</div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;                ADC0_SC2 = savedSC2 &amp; 0x7F;</div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;                ADC0_SC3 = savedSC3 &amp; 0xF;</div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;                ADC0_SC1A = savedSC1A &amp; 0x7F;</div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;            }</div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;</div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;                    <span class="comment">// comparison was false, we return an error value to indicate this</span></div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;            __enable_irq();</div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;            <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#af181c4b5c617516517400c427494e7e7">ADC_ERROR_DIFF_VALUE</a>;</div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;                } <span class="comment">// end if comparison false</span></div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;</div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;                __enable_irq();</div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;                yield();</div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;        } <span class="comment">// while</span></div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;</div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;} <span class="comment">// analogReadDifferential</span></div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;</div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;</div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;<span class="comment">/* Starts an analog measurement on the pin.</span></div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;<span class="comment">*  It returns inmediately, read value with readSingle().</span></div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;<span class="comment">*  If the pin is incorrect it returns ADC_ERROR_VALUE.</span></div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00607"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a7759873f09a8369e41f12280234a383b">  607</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_a_d_c.html#a7759873f09a8369e41f12280234a383b">ADC::startSingleRead</a>(uint8_t pin) {</div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;        <span class="keywordflow">if</span> (pin &gt;= 14 &amp;&amp; pin &lt;= 39) {</div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;                <span class="keywordflow">if</span> (pin &lt;= 23) {</div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;                        pin -= 14;  <span class="comment">// 14-23 are A0-A9</span></div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;                } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pin &gt;= 34) {</div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;                        pin -= 24;  <span class="comment">// 34-37 are A10-A13, 38 is temp sensor, 39 is vref</span></div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;                }</div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a810b46bdaa73057d834142229111adc5">ADC_ERROR_VALUE</a>;   <span class="comment">// all others are invalid</span></div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;    }</div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;</div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;        <span class="keywordflow">if</span> (calibrating) wait_for_cal();</div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;</div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;        uint8_t res = <a class="code" href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">getResolution</a>();</div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;</div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;    <span class="comment">// if the resolution is incorrect (i.e. 9, 11 or 13) silently correct it</span></div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;    adc_config.diffRes = 0;</div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;        <span class="keywordflow">if</span>( (res==9) || (res==11) || (res==13) ) {</div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;        <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(res-1);</div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;        adc_config.diffRes = 1; <span class="comment">// resolution changed</span></div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(res==16){ <span class="comment">// make sure the max value corresponds to a single-ended 16 bits mode</span></div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;             analog_max_val = 65536;</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;    }</div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;</div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;    <span class="comment">// vars to saved the current state of the ADC in case it&#39;s in use</span></div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;    adcWasInUse = <a class="code" href="class_a_d_c.html#ae9f0fe4ddfa32cd8eb5a6fb085c06668">isConverting</a>(); <span class="comment">// is the ADC running now?</span></div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;</div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;    <span class="keywordflow">if</span>(adcWasInUse) { <span class="comment">// this means we&#39;re interrupting a conversion</span></div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;        <span class="comment">// save the current conversion config, the adc isr will restore the adc</span></div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;        __disable_irq();</div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;        <span class="comment">//GPIOC_PSOR = 1&lt;&lt;5;</span></div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;        adc_config.savedRes = res;</div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;        adc_config.savedSC1A = ADC0_SC1A;</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;        adc_config.savedCFG1 = ADC0_CFG1;</div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;        adc_config.savedCFG2 = ADC0_CFG2;</div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;        adc_config.savedSC2 = ADC0_SC2;</div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;        adc_config.savedSC3 = ADC0_SC3;</div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;        <span class="comment">//__enable_irq(); //keep irq disabled until we start our conversion</span></div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;</div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;    }</div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;</div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;    <span class="comment">// select pin for single-ended mode and start conversion, enable interrupts to know when it&#39;s done</span></div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;    __disable_irq();</div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;    ADC0_SC1A = channel2sc1a[pin] + var_enableInterrupts*ADC_SC1_AIEN;</div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;        __enable_irq();</div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;</div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;}</div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;</div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;</div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;<span class="comment">/* Start a differential conversion between two pins (pinP - pinN).</span></div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;<span class="comment">* It returns inmediately, get value with readSingle().</span></div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;<span class="comment">* Incorrect pins will return ADC_ERROR_DIFF_VALUE.</span></div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;<span class="comment">* Set the resolution, number of averages and voltage reference using the appropriate functions</span></div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00662"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a6780adeda5597efe5c09e6dfb5f49ae1">  662</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_a_d_c.html#a6780adeda5597efe5c09e6dfb5f49ae1">ADC::startSingleDifferential</a>(uint8_t pinP, uint8_t pinN)</div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;{</div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;</div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;        <span class="comment">// check for calibration before setting channels,</span></div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;        <span class="comment">// because conversion will start as soon as we write to ADC0_SC1A</span></div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;        <span class="keywordflow">if</span> (calibrating) wait_for_cal();</div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;</div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;        uint8_t res = <a class="code" href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">getResolution</a>();</div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;</div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;        <span class="comment">// if the resolution is incorrect (i.e. 8, 10 or 12) silently correct it</span></div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;    adc_config.diffRes = 0;</div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;    <span class="keywordflow">if</span>( (res==8) || (res==10) || (res==12) ) {</div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;        <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(res+1);</div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;        adc_config.diffRes = 1; <span class="comment">// resolution changed</span></div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(res==16) {</div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;        analog_max_val = 32768; <span class="comment">// 16 bit diff mode is actually 15 bits + 1 sign bit</span></div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;    }</div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;</div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;    <span class="comment">// vars to saved the current state of the ADC in case it&#39;s in use</span></div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;    adcWasInUse = <a class="code" href="class_a_d_c.html#ae9f0fe4ddfa32cd8eb5a6fb085c06668">isConverting</a>(); <span class="comment">// is the ADC running now?</span></div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;</div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;    <span class="keywordflow">if</span>(adcWasInUse) { <span class="comment">// this means we&#39;re interrupting a conversion</span></div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;        <span class="comment">// save the current conversion config, the adc isr will restore the adc</span></div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;        __disable_irq();</div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;        <span class="comment">//GPIOC_PSOR = 1&lt;&lt;5;</span></div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;        adc_config.savedRes = res;</div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;        adc_config.savedSC1A = ADC0_SC1A;</div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;        adc_config.savedCFG1 = ADC0_CFG1;</div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;        adc_config.savedCFG2 = ADC0_CFG2;</div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;        adc_config.savedSC2 = ADC0_SC2;</div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;        adc_config.savedSC3 = ADC0_SC3;</div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;        <span class="comment">//__enable_irq(); //keep irq disabled until we start our conversion</span></div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;</div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;    }</div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;</div>
<div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;    <span class="comment">// once ADC0_SC1A is set, conversion will start, enable interrupts if requested</span></div>
<div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;        <span class="keywordflow">if</span> ( (pinP == A10) &amp;&amp; (pinN == A11) ) { <span class="comment">// DAD0 selected, pins 34 and 35</span></div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;        __disable_irq();</div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;            ADC0_SC1A = ADC_SC1_DIFF + 0x0 + var_enableInterrupts*ADC_SC1_AIEN;</div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;        __enable_irq();</div>
<div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( (pinP == A12) &amp;&amp; (pinN == A13) ) { <span class="comment">// DAD3 selected, pins 36 and 37</span></div>
<div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;            __disable_irq();</div>
<div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;            ADC0_SC1A = ADC_SC1_DIFF + 0x3 + var_enableInterrupts*ADC_SC1_AIEN;</div>
<div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;            __enable_irq();</div>
<div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;            __enable_irq();</div>
<div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#af181c4b5c617516517400c427494e7e7">ADC_ERROR_DIFF_VALUE</a>; <span class="comment">// all others aren&#39;t capable of differential measurements, perhaps return analogRead(pinP)-analogRead(pinN)?</span></div>
<div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;    }</div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;</div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;}</div>
<div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160;</div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;<span class="comment">/* Reads the analog value of the single conversion set with startAnalogRead(pin)</span></div>
<div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00715"></a><span class="lineno"><a class="line" href="class_a_d_c.html#ae97b6fffe4527e799006c11a9426f468">  715</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_a_d_c.html#ae97b6fffe4527e799006c11a9426f468">ADC::readSingle</a>() { <span class="keywordflow">return</span> <a class="code" href="class_a_d_c.html#a03e9af3db07ad97e401045a848aabf17">analogReadContinuous</a>(); }</div>
<div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;</div>
<div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;</div>
<div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;</div>
<div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;</div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;<span class="comment">/* Starts continuous conversion on the pin</span></div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;<span class="comment"> * It returns as soon as the ADC is set, use analogReadContinuous() to read the values</span></div>
<div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;<span class="comment"> * Set the resolution, number of averages and voltage reference using the appropriate functions BEFORE calling this function</span></div>
<div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00724"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a332029f903b3d92cb52d2d8b1efe5ed6">  724</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#a332029f903b3d92cb52d2d8b1efe5ed6">ADC::startContinuous</a>(uint8_t pin)</div>
<div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;{</div>
<div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;</div>
<div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160;    <span class="comment">// if the resolution is incorrect (i.e. 9, 11 or 13) silently correct it</span></div>
<div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;        uint8_t res = <a class="code" href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">getResolution</a>();</div>
<div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;        <span class="keywordflow">if</span>( (res==9) || (res==11) || (res==13) ) {</div>
<div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;        <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(res-1);</div>
<div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(res==16) {</div>
<div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;        analog_max_val = 65536; <span class="comment">// make sure a differential function didn&#39;t change this</span></div>
<div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;    }</div>
<div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;</div>
<div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;    <span class="comment">// check for calibration before setting channels,</span></div>
<div class="line"><a name="l00736"></a><span class="lineno">  736</span>&#160;        <span class="keywordflow">if</span> (calibrating) wait_for_cal();</div>
<div class="line"><a name="l00737"></a><span class="lineno">  737</span>&#160;</div>
<div class="line"><a name="l00738"></a><span class="lineno">  738</span>&#160;        <span class="keywordflow">if</span> (pin &gt;= 14) {</div>
<div class="line"><a name="l00739"></a><span class="lineno">  739</span>&#160;                <span class="keywordflow">if</span> (pin &lt;= 23) {</div>
<div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;                        pin -= 14;  <span class="comment">// 14-23 are A0-A9</span></div>
<div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;                } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pin &gt;= 34 &amp;&amp; pin &lt;= 39) {</div>
<div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;                        pin -= 24;  <span class="comment">// 34-37 are A10-A13, 38 is temp sensor, 39 is vref</span></div>
<div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;                } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;                        <span class="keywordflow">return</span>;   <span class="comment">// all others are invalid</span></div>
<div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;                }</div>
<div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;        }</div>
<div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;</div>
<div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;    __disable_irq();</div>
<div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;    <span class="comment">// set continuous conversion flag</span></div>
<div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;        ADC0_SC3 |= ADC_SC3_ADCO;</div>
<div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;    <span class="comment">// select pin for single-ended mode and start conversion, enable interrupts if requested</span></div>
<div class="line"><a name="l00752"></a><span class="lineno">  752</span>&#160;    ADC0_SC1A = channel2sc1a[pin] + var_enableInterrupts*ADC_SC1_AIEN;</div>
<div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160;    __enable_irq();</div>
<div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160;}</div>
<div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160;</div>
<div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;</div>
<div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;<span class="comment">/* Starts continuous and differential conversion between the pins (pinP-pinN)</span></div>
<div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;<span class="comment"> * It returns as soon as the ADC is set, use analogReadContinuous() to read the value</span></div>
<div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;<span class="comment"> * Set the resolution, number of averages and voltage reference using the appropriate functions BEFORE calling this function</span></div>
<div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00761"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a013c9c109b7ccd038a5939866fe777ee">  761</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#a013c9c109b7ccd038a5939866fe777ee">ADC::startContinuousDifferential</a>(uint8_t pinP, uint8_t pinN)</div>
<div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;{</div>
<div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;</div>
<div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160;    <span class="comment">// if the resolution is incorrect (i.e. 8, 10 or 12) silently correct</span></div>
<div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160;        uint8_t res = <a class="code" href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">getResolution</a>();</div>
<div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;        <span class="keywordflow">if</span>( (res==8) || (res==10) || (res==12) ) {</div>
<div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;        <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(res+1);</div>
<div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(res==16) {</div>
<div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160;        analog_max_val = 32768; <span class="comment">// 16 bit diff mode is actually 15 bits + 1 sign bit</span></div>
<div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;        <span class="comment">//ADC0_CV1 /= 2; // change back the comparison values</span></div>
<div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;        <span class="comment">//ADC0_CV2 /= 2;</span></div>
<div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;    }</div>
<div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;</div>
<div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;</div>
<div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;    <span class="comment">// check for calibration before setting channels,</span></div>
<div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;        <span class="comment">// because conversion will start as soon as we write to ADC0_SC1A</span></div>
<div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160;        <span class="keywordflow">if</span> (calibrating) wait_for_cal();</div>
<div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;</div>
<div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;    <span class="comment">// set continuous conversion flag</span></div>
<div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160;        __disable_irq();</div>
<div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160;        ADC0_SC3 |= ADC_SC3_ADCO;</div>
<div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;        __enable_irq();</div>
<div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;</div>
<div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;    <span class="comment">// select pins for differential mode and start conversion, enable interrupts if requested</span></div>
<div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;        <span class="keywordflow">if</span> ( (pinP == A10) &amp;&amp; (pinN == A11) ) { <span class="comment">// DAD0 selected, pins 34 and 35</span></div>
<div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;        __disable_irq();</div>
<div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;            ADC0_SC1A = ADC_SC1_DIFF + 0x0 + var_enableInterrupts*ADC_SC1_AIEN;</div>
<div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;        __enable_irq();</div>
<div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( (pinP == A12) &amp;&amp; (pinN == A13) ) { <span class="comment">// DAD3 selected, pins 36 and 37</span></div>
<div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;        __disable_irq();</div>
<div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160;            ADC0_SC1A = ADC_SC1_DIFF + 0x3 + var_enableInterrupts*ADC_SC1_AIEN;</div>
<div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;            __enable_irq();</div>
<div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;    }</div>
<div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;</div>
<div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;    <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160;}</div>
<div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;</div>
<div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;<span class="comment">/* Reads the analog value of the continuous conversion set with analogStartContinuous(pin)</span></div>
<div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160;<span class="comment"> * It returns the last converted value.</span></div>
<div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00803"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a03e9af3db07ad97e401045a848aabf17">  803</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_a_d_c.html#a03e9af3db07ad97e401045a848aabf17">ADC::analogReadContinuous</a>()</div>
<div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;{</div>
<div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;    <span class="comment">// The result is a 16 bit extended sign 2&#39;s complement number (the sign bit goes from bit 15 to analog_config_bits-1)</span></div>
<div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;        <span class="comment">// if the number is negative we fill the rest of the 1&#39;s upto 32 bits (we extend the sign)</span></div>
<div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;        int16_t result = ADC0_RA;</div>
<div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;    <span class="keywordflow">if</span> (result &amp; (1&lt;&lt;15)) { <span class="comment">// number is negative</span></div>
<div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;        result |= 0xFFFF0000; <span class="comment">// result is a 32 bit integer</span></div>
<div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;    }</div>
<div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;</div>
<div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;        <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;}</div>
<div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;</div>
<div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;<span class="comment">/* Stops continuous conversion</span></div>
<div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00817"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a05857ba731f9b2b0ae35bef5c5cddd9e">  817</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#a05857ba731f9b2b0ae35bef5c5cddd9e">ADC::stopContinuous</a>()</div>
<div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;{</div>
<div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;        ADC0_SC1A |= 0x1F; <span class="comment">// set channel select to all 1&#39;s (31) to stop it.</span></div>
<div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;</div>
<div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;}</div>
<div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;</div>
<div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;</div>
<div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;<span class="comment">/* void function that does nothing</span></div>
<div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;<span class="keywordtype">void</span> ADC::voidFunction(){<span class="keywordflow">return</span>;}</div>
<div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;</div>
<div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;<span class="comment">/* Callback from the ADC interrupt, it adds the new value to the ring buffer</span></div>
<div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;<span class="comment">* it takes around 3 us</span></div>
<div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160;<span class="keywordtype">void</span> ADC::ADC_callback() {</div>
<div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160;<span class="preprocessor">    #if debug</span></div>
<div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;<span class="preprocessor"></span>        digitalWriteFast(ledPin, HIGH);</div>
<div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;<span class="preprocessor">    #endif</span></div>
<div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;    <span class="comment">// get the pin number</span></div>
<div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;    <span class="keywordtype">int</span> pin = sc1a2channel[ADC0_SC1A &amp; 0x1F];</div>
<div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;</div>
<div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;    <span class="comment">// find the index of the pin</span></div>
<div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;    <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;    <span class="keywordflow">while</span>( (i&lt;<a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a>) &amp;&amp; (analogTimer[i]-&gt;pinNumber!=pin) ) {i++;}</div>
<div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;    <span class="keywordflow">if</span>( i==<a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a>) {</div>
<div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;<span class="preprocessor">        #if debug</span></div>
<div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;<span class="preprocessor"></span>            digitalWriteFast(ledPin, LOW);</div>
<div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;<span class="preprocessor">        #endif</span></div>
<div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;<span class="preprocessor"></span>        <span class="keywordflow">return</span>; <span class="comment">// the last measurement doesn&#39;t belong to an analog timer buffer.</span></div>
<div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;    }</div>
<div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;</div>
<div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160;    <span class="comment">// place value in its buffer</span></div>
<div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;    analogTimer[i]-&gt;buffer-&gt;write(<a class="code" href="class_a_d_c.html#ae97b6fffe4527e799006c11a9426f468">readSingle</a>());</div>
<div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160;</div>
<div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160;    <span class="comment">// restore ADC config if it was in use before being interrupted by the analog timer</span></div>
<div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;    <span class="keywordflow">if</span> (adcWasInUse) {</div>
<div class="line"><a name="l00855"></a><span class="lineno">  855</span>&#160;        <span class="comment">// restore ADC config, and restart conversion</span></div>
<div class="line"><a name="l00856"></a><span class="lineno">  856</span>&#160;        <span class="comment">//if(adc_config.diffRes)</span></div>
<div class="line"><a name="l00857"></a><span class="lineno">  857</span>&#160;        <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(adc_config.savedRes); <span class="comment">// don&#39;t change res if isn&#39;t necessary</span></div>
<div class="line"><a name="l00858"></a><span class="lineno">  858</span>&#160;        ADC0_CFG1 = adc_config.savedCFG1;</div>
<div class="line"><a name="l00859"></a><span class="lineno">  859</span>&#160;        ADC0_CFG2 = adc_config.savedCFG2;</div>
<div class="line"><a name="l00860"></a><span class="lineno">  860</span>&#160;        ADC0_SC2 = adc_config.savedSC2 &amp; 0x7F;</div>
<div class="line"><a name="l00861"></a><span class="lineno">  861</span>&#160;        ADC0_SC3 = adc_config.savedSC3 &amp; 0xF;</div>
<div class="line"><a name="l00862"></a><span class="lineno">  862</span>&#160;        ADC0_SC1A = adc_config.savedSC1A &amp; 0x7F;</div>
<div class="line"><a name="l00863"></a><span class="lineno">  863</span>&#160;    }</div>
<div class="line"><a name="l00864"></a><span class="lineno">  864</span>&#160;</div>
<div class="line"><a name="l00865"></a><span class="lineno">  865</span>&#160;<span class="preprocessor">    #if debug</span></div>
<div class="line"><a name="l00866"></a><span class="lineno">  866</span>&#160;<span class="preprocessor"></span>        digitalWriteFast(ledPin, LOW);</div>
<div class="line"><a name="l00867"></a><span class="lineno">  867</span>&#160;<span class="preprocessor">    #endif</span></div>
<div class="line"><a name="l00868"></a><span class="lineno">  868</span>&#160;<span class="preprocessor"></span>}</div>
<div class="line"><a name="l00869"></a><span class="lineno">  869</span>&#160;</div>
<div class="line"><a name="l00870"></a><span class="lineno">  870</span>&#160;</div>
<div class="line"><a name="l00871"></a><span class="lineno">  871</span>&#160;<span class="comment">/* callback function for the analog timers</span></div>
<div class="line"><a name="l00872"></a><span class="lineno">  872</span>&#160;<span class="comment">*  it takes around 2.5 us</span></div>
<div class="line"><a name="l00873"></a><span class="lineno">  873</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00874"></a><span class="lineno">  874</span>&#160;<span class="keywordtype">void</span> ADC::analogTimerCallback0() {</div>
<div class="line"><a name="l00875"></a><span class="lineno">  875</span>&#160;<span class="preprocessor">    #if debug</span></div>
<div class="line"><a name="l00876"></a><span class="lineno">  876</span>&#160;<span class="preprocessor"></span>        digitalWriteFast(ledPin, HIGH);</div>
<div class="line"><a name="l00877"></a><span class="lineno">  877</span>&#160;<span class="preprocessor">    #endif</span></div>
<div class="line"><a name="l00878"></a><span class="lineno">  878</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00879"></a><span class="lineno">  879</span>&#160;    uint8_t pin = analogTimer[0]-&gt;pinNumber;</div>
<div class="line"><a name="l00880"></a><span class="lineno">  880</span>&#160;    <span class="keywordflow">if</span>(analogTimer[0]-&gt;isDiff) {</div>
<div class="line"><a name="l00881"></a><span class="lineno">  881</span>&#160;        <span class="keywordflow">if</span>(pin == A10) {</div>
<div class="line"><a name="l00882"></a><span class="lineno">  882</span>&#160;            <a class="code" href="class_a_d_c.html#a6780adeda5597efe5c09e6dfb5f49ae1">startSingleDifferential</a>(A10, A11);</div>
<div class="line"><a name="l00883"></a><span class="lineno">  883</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(pin == A12) {</div>
<div class="line"><a name="l00884"></a><span class="lineno">  884</span>&#160;            <a class="code" href="class_a_d_c.html#a6780adeda5597efe5c09e6dfb5f49ae1">startSingleDifferential</a>(A12, A13);</div>
<div class="line"><a name="l00885"></a><span class="lineno">  885</span>&#160;        }</div>
<div class="line"><a name="l00886"></a><span class="lineno">  886</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00887"></a><span class="lineno">  887</span>&#160;        <a class="code" href="class_a_d_c.html#a7759873f09a8369e41f12280234a383b">startSingleRead</a>(pin);</div>
<div class="line"><a name="l00888"></a><span class="lineno">  888</span>&#160;    }</div>
<div class="line"><a name="l00889"></a><span class="lineno">  889</span>&#160;</div>
<div class="line"><a name="l00890"></a><span class="lineno">  890</span>&#160;<span class="preprocessor">    #if debug</span></div>
<div class="line"><a name="l00891"></a><span class="lineno">  891</span>&#160;<span class="preprocessor"></span>        digitalWriteFast(ledPin, LOW);</div>
<div class="line"><a name="l00892"></a><span class="lineno">  892</span>&#160;<span class="preprocessor">    #endif</span></div>
<div class="line"><a name="l00893"></a><span class="lineno">  893</span>&#160;<span class="preprocessor"></span>}</div>
<div class="line"><a name="l00894"></a><span class="lineno">  894</span>&#160;<span class="comment">/* callback function for the analog timers</span></div>
<div class="line"><a name="l00895"></a><span class="lineno">  895</span>&#160;<span class="comment">*  it takes around 2.5 us</span></div>
<div class="line"><a name="l00896"></a><span class="lineno">  896</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00897"></a><span class="lineno">  897</span>&#160;<span class="keywordtype">void</span> ADC::analogTimerCallback1() {</div>
<div class="line"><a name="l00898"></a><span class="lineno">  898</span>&#160;<span class="preprocessor">    #if debug</span></div>
<div class="line"><a name="l00899"></a><span class="lineno">  899</span>&#160;<span class="preprocessor"></span>        digitalWriteFast(ledPin, HIGH);</div>
<div class="line"><a name="l00900"></a><span class="lineno">  900</span>&#160;<span class="preprocessor">    #endif</span></div>
<div class="line"><a name="l00901"></a><span class="lineno">  901</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00902"></a><span class="lineno">  902</span>&#160;    uint8_t pin = analogTimer[1]-&gt;pinNumber;</div>
<div class="line"><a name="l00903"></a><span class="lineno">  903</span>&#160;    <span class="keywordflow">if</span>(analogTimer[1]-&gt;isDiff) {</div>
<div class="line"><a name="l00904"></a><span class="lineno">  904</span>&#160;        <span class="keywordflow">if</span>(pin == A10) {</div>
<div class="line"><a name="l00905"></a><span class="lineno">  905</span>&#160;            <a class="code" href="class_a_d_c.html#a6780adeda5597efe5c09e6dfb5f49ae1">startSingleDifferential</a>(A10, A11);</div>
<div class="line"><a name="l00906"></a><span class="lineno">  906</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(pin == A12) {</div>
<div class="line"><a name="l00907"></a><span class="lineno">  907</span>&#160;            <a class="code" href="class_a_d_c.html#a6780adeda5597efe5c09e6dfb5f49ae1">startSingleDifferential</a>(A12, A13);</div>
<div class="line"><a name="l00908"></a><span class="lineno">  908</span>&#160;        }</div>
<div class="line"><a name="l00909"></a><span class="lineno">  909</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00910"></a><span class="lineno">  910</span>&#160;        <a class="code" href="class_a_d_c.html#a7759873f09a8369e41f12280234a383b">startSingleRead</a>(pin);</div>
<div class="line"><a name="l00911"></a><span class="lineno">  911</span>&#160;    }</div>
<div class="line"><a name="l00912"></a><span class="lineno">  912</span>&#160;</div>
<div class="line"><a name="l00913"></a><span class="lineno">  913</span>&#160;<span class="preprocessor">    #if debug</span></div>
<div class="line"><a name="l00914"></a><span class="lineno">  914</span>&#160;<span class="preprocessor"></span>        digitalWriteFast(ledPin, LOW);</div>
<div class="line"><a name="l00915"></a><span class="lineno">  915</span>&#160;<span class="preprocessor">    #endif</span></div>
<div class="line"><a name="l00916"></a><span class="lineno">  916</span>&#160;<span class="preprocessor"></span>}</div>
<div class="line"><a name="l00917"></a><span class="lineno">  917</span>&#160;<span class="comment">/* callback function for the analog timers</span></div>
<div class="line"><a name="l00918"></a><span class="lineno">  918</span>&#160;<span class="comment">*  it takes around 2.5 us</span></div>
<div class="line"><a name="l00919"></a><span class="lineno">  919</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00920"></a><span class="lineno">  920</span>&#160;<span class="keywordtype">void</span> ADC::analogTimerCallback2() {</div>
<div class="line"><a name="l00921"></a><span class="lineno">  921</span>&#160;<span class="preprocessor">    #if debug</span></div>
<div class="line"><a name="l00922"></a><span class="lineno">  922</span>&#160;<span class="preprocessor"></span>        digitalWriteFast(ledPin, HIGH);</div>
<div class="line"><a name="l00923"></a><span class="lineno">  923</span>&#160;<span class="preprocessor">    #endif</span></div>
<div class="line"><a name="l00924"></a><span class="lineno">  924</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00925"></a><span class="lineno">  925</span>&#160;    uint8_t pin = analogTimer[2]-&gt;pinNumber;</div>
<div class="line"><a name="l00926"></a><span class="lineno">  926</span>&#160;    <span class="keywordflow">if</span>(analogTimer[2]-&gt;isDiff) {</div>
<div class="line"><a name="l00927"></a><span class="lineno">  927</span>&#160;        <span class="keywordflow">if</span>(pin == A10) {</div>
<div class="line"><a name="l00928"></a><span class="lineno">  928</span>&#160;            <a class="code" href="class_a_d_c.html#a6780adeda5597efe5c09e6dfb5f49ae1">startSingleDifferential</a>(A10, A11);</div>
<div class="line"><a name="l00929"></a><span class="lineno">  929</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(pin == A12) {</div>
<div class="line"><a name="l00930"></a><span class="lineno">  930</span>&#160;            <a class="code" href="class_a_d_c.html#a6780adeda5597efe5c09e6dfb5f49ae1">startSingleDifferential</a>(A12, A13);</div>
<div class="line"><a name="l00931"></a><span class="lineno">  931</span>&#160;        }</div>
<div class="line"><a name="l00932"></a><span class="lineno">  932</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00933"></a><span class="lineno">  933</span>&#160;        <a class="code" href="class_a_d_c.html#a7759873f09a8369e41f12280234a383b">startSingleRead</a>(pin);</div>
<div class="line"><a name="l00934"></a><span class="lineno">  934</span>&#160;    }</div>
<div class="line"><a name="l00935"></a><span class="lineno">  935</span>&#160;</div>
<div class="line"><a name="l00936"></a><span class="lineno">  936</span>&#160;<span class="preprocessor">    #if debug</span></div>
<div class="line"><a name="l00937"></a><span class="lineno">  937</span>&#160;<span class="preprocessor"></span>        digitalWriteFast(ledPin, LOW);</div>
<div class="line"><a name="l00938"></a><span class="lineno">  938</span>&#160;<span class="preprocessor">    #endif</span></div>
<div class="line"><a name="l00939"></a><span class="lineno">  939</span>&#160;<span class="preprocessor"></span>}</div>
<div class="line"><a name="l00940"></a><span class="lineno">  940</span>&#160;</div>
<div class="line"><a name="l00941"></a><span class="lineno">  941</span>&#160;<span class="comment">/* Starts a periodic measurement.</span></div>
<div class="line"><a name="l00942"></a><span class="lineno">  942</span>&#160;<span class="comment">* The values will be added to a ring buffer of a fixed size.</span></div>
<div class="line"><a name="l00943"></a><span class="lineno">  943</span>&#160;<span class="comment">*   Read the oldest value with getTimerValue(pin), check if it&#39;s the last value with isLastValue(pin).</span></div>
<div class="line"><a name="l00944"></a><span class="lineno">  944</span>&#160;<span class="comment">*   When the buffer is full, new data will overwrite the oldest values.</span></div>
<div class="line"><a name="l00945"></a><span class="lineno">  945</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00946"></a><span class="lineno"><a class="line" href="class_a_d_c.html#af093122742f6ac86684cb983d4293721">  946</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_a_d_c.html#af093122742f6ac86684cb983d4293721">ADC::startAnalogTimer</a>(uint8_t pin, uint32_t period) {</div>
<div class="line"><a name="l00947"></a><span class="lineno">  947</span>&#160;</div>
<div class="line"><a name="l00948"></a><span class="lineno">  948</span>&#160;    <span class="comment">// check pin</span></div>
<div class="line"><a name="l00949"></a><span class="lineno">  949</span>&#160;    <span class="keywordflow">if</span> (pin &lt; 14 || pin &gt; 39) {</div>
<div class="line"><a name="l00950"></a><span class="lineno">  950</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a12a745ce8b6499612828e575e39c46b0">ANALOG_TIMER_ERROR</a>;   <span class="comment">// invalid pin</span></div>
<div class="line"><a name="l00951"></a><span class="lineno">  951</span>&#160;    }</div>
<div class="line"><a name="l00952"></a><span class="lineno">  952</span>&#160;</div>
<div class="line"><a name="l00953"></a><span class="lineno">  953</span>&#160;    <span class="comment">// if the resolution is incorrect (i.e. 9, 11 or 13) silently correct it here</span></div>
<div class="line"><a name="l00954"></a><span class="lineno">  954</span>&#160;        uint8_t res = <a class="code" href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">getResolution</a>();</div>
<div class="line"><a name="l00955"></a><span class="lineno">  955</span>&#160;        <span class="keywordflow">if</span>( (res==9) || (res==11) || (res==13) ) {</div>
<div class="line"><a name="l00956"></a><span class="lineno">  956</span>&#160;        <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(res-1);</div>
<div class="line"><a name="l00957"></a><span class="lineno">  957</span>&#160;        }</div>
<div class="line"><a name="l00958"></a><span class="lineno">  958</span>&#160;</div>
<div class="line"><a name="l00959"></a><span class="lineno">  959</span>&#160;    <span class="comment">// find next timerPin not in use</span></div>
<div class="line"><a name="l00960"></a><span class="lineno">  960</span>&#160;    <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l00961"></a><span class="lineno">  961</span>&#160;    <span class="keywordflow">for</span>(i=0; i&lt;<a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a>; i++) {</div>
<div class="line"><a name="l00962"></a><span class="lineno">  962</span>&#160;        <span class="keywordflow">if</span>(analogTimer[i]-&gt;pinNumber==-1) {</div>
<div class="line"><a name="l00963"></a><span class="lineno">  963</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00964"></a><span class="lineno">  964</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(analogTimer[i]-&gt;pinNumber==pin) { <span class="comment">// the timer already exists, do nothing</span></div>
<div class="line"><a name="l00965"></a><span class="lineno">  965</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00966"></a><span class="lineno">  966</span>&#160;        }</div>
<div class="line"><a name="l00967"></a><span class="lineno">  967</span>&#160;    }</div>
<div class="line"><a name="l00968"></a><span class="lineno">  968</span>&#160;    <span class="keywordflow">if</span>( i == (MAX_ANALOG_TIMERS) ) {  <span class="comment">// All timers are being used, stop at least one of them!</span></div>
<div class="line"><a name="l00969"></a><span class="lineno">  969</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a12a745ce8b6499612828e575e39c46b0">ANALOG_TIMER_ERROR</a>;</div>
<div class="line"><a name="l00970"></a><span class="lineno">  970</span>&#160;    }</div>
<div class="line"><a name="l00971"></a><span class="lineno">  971</span>&#160;</div>
<div class="line"><a name="l00972"></a><span class="lineno">  972</span>&#160;    analogTimer[i]-&gt;pinNumber = pin; <span class="comment">// reserve a timer for this pin</span></div>
<div class="line"><a name="l00973"></a><span class="lineno">  973</span>&#160;</div>
<div class="line"><a name="l00974"></a><span class="lineno">  974</span>&#160;    <span class="comment">// create both objects</span></div>
<div class="line"><a name="l00975"></a><span class="lineno">  975</span>&#160;    analogTimer[i]-&gt;timer = <span class="keyword">new</span> IntervalTimer;</div>
<div class="line"><a name="l00976"></a><span class="lineno">  976</span>&#160;    analogTimer[i]-&gt;buffer = <span class="keyword">new</span> <a class="code" href="class_ring_buffer.html">RingBuffer</a>;</div>
<div class="line"><a name="l00977"></a><span class="lineno">  977</span>&#160;</div>
<div class="line"><a name="l00978"></a><span class="lineno">  978</span>&#160;    <span class="comment">// store period</span></div>
<div class="line"><a name="l00979"></a><span class="lineno">  979</span>&#160;    analogTimer[i]-&gt;period = period;</div>
<div class="line"><a name="l00980"></a><span class="lineno">  980</span>&#160;</div>
<div class="line"><a name="l00981"></a><span class="lineno">  981</span>&#160;        <span class="comment">// point the adc_isr to the function that takes care of the timers</span></div>
<div class="line"><a name="l00982"></a><span class="lineno">  982</span>&#160;        <a class="code" href="class_a_d_c.html#acd2190a0fffb121216e5f5bb2d84fc8e">analogTimer_ADC_Callback</a> = &amp;ADC_callback;</div>
<div class="line"><a name="l00983"></a><span class="lineno">  983</span>&#160;    <span class="comment">// enable interrupts</span></div>
<div class="line"><a name="l00984"></a><span class="lineno">  984</span>&#160;        <a class="code" href="class_a_d_c.html#a66a26ded71b7b938e3fc8826c4579092">enableInterrupts</a>();</div>
<div class="line"><a name="l00985"></a><span class="lineno">  985</span>&#160;</div>
<div class="line"><a name="l00986"></a><span class="lineno">  986</span>&#160;    <span class="comment">// start timerPin # i</span></div>
<div class="line"><a name="l00987"></a><span class="lineno">  987</span>&#160;    <span class="keywordtype">int</span> result = analogTimer[i]-&gt;timer-&gt;begin(analogTimerCallback[i], period);</div>
<div class="line"><a name="l00988"></a><span class="lineno">  988</span>&#160;    <span class="keywordflow">if</span>(!result) { <span class="comment">// begin returns true/false</span></div>
<div class="line"><a name="l00989"></a><span class="lineno">  989</span>&#160;            <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a12a745ce8b6499612828e575e39c46b0">ANALOG_TIMER_ERROR</a>;</div>
<div class="line"><a name="l00990"></a><span class="lineno">  990</span>&#160;    }</div>
<div class="line"><a name="l00991"></a><span class="lineno">  991</span>&#160;</div>
<div class="line"><a name="l00992"></a><span class="lineno">  992</span>&#160;    <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00993"></a><span class="lineno">  993</span>&#160;}</div>
<div class="line"><a name="l00994"></a><span class="lineno">  994</span>&#160;</div>
<div class="line"><a name="l00995"></a><span class="lineno">  995</span>&#160;<span class="comment">/*  Starts a periodic measurement using the IntervalTimer library.</span></div>
<div class="line"><a name="l00996"></a><span class="lineno">  996</span>&#160;<span class="comment">*   The values will be added to a ring buffer of a fixed size.</span></div>
<div class="line"><a name="l00997"></a><span class="lineno">  997</span>&#160;<span class="comment">*   Read the oldest value with getTimerValue(pinP), check if it&#39;s the last value with isLastValue(pinP).</span></div>
<div class="line"><a name="l00998"></a><span class="lineno">  998</span>&#160;<span class="comment">*   When the buffer is full, new data will overwrite the oldest values.</span></div>
<div class="line"><a name="l00999"></a><span class="lineno">  999</span>&#160;<span class="comment">*   \param pinP must be A10 or A12.</span></div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>&#160;<span class="comment">*   \param pinN must be A11 (if pinP=A10) or A13 (if pinP=A12).</span></div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>&#160;<span class="comment">*   \returns ANALOG_TIMER_ERROR if the timer could not be started. Stop other analog timer and retry.</span></div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l01003"></a><span class="lineno"><a class="line" href="class_a_d_c.html#adc1fe1cb2942e7aa12ea4737a529207c"> 1003</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_a_d_c.html#adc1fe1cb2942e7aa12ea4737a529207c">ADC::startAnalogTimerDifferential</a>(uint8_t pinP, uint8_t pinN, uint32_t period) {</div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>&#160;</div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>&#160;    <span class="comment">// check pin</span></div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>&#160;    <span class="keywordflow">if</span> ( (pinP != A10) &amp;&amp; (pinP != A12) ) {</div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a12a745ce8b6499612828e575e39c46b0">ANALOG_TIMER_ERROR</a>;   <span class="comment">// invalid pin</span></div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>&#160;    }</div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>&#160;</div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>&#160;    <span class="comment">// if the resolution is incorrect (i.e. 8, 10 or 12) silently correct it here</span></div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>&#160;        uint8_t res = <a class="code" href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">getResolution</a>();</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>&#160;        <span class="keywordflow">if</span>( (res==8) || (res==10) || (res==12) ) {</div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>&#160;        <a class="code" href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">setResolution</a>(res+1);</div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>&#160;        }</div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>&#160;</div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>&#160;    <span class="comment">// find next timerPin not in use</span></div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>&#160;    <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>&#160;    <span class="keywordflow">for</span>(i=0; i&lt;<a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a>; i++) {</div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>&#160;        <span class="keywordflow">if</span>(analogTimer[i]-&gt;pinNumber==-1) {</div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(analogTimer[i]-&gt;pinNumber==pinP) { <span class="comment">// the timer already exists, do nothing</span></div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>&#160;        }</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>&#160;    }</div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>&#160;    <span class="keywordflow">if</span>( i == (MAX_ANALOG_TIMERS) ) {  <span class="comment">// All timers are being used, stop at least one of them!</span></div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a12a745ce8b6499612828e575e39c46b0">ANALOG_TIMER_ERROR</a>;</div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>&#160;    }</div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>&#160;</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>&#160;    analogTimer[i]-&gt;pinNumber = pinP; <span class="comment">// reserve a timer for this pin</span></div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>&#160;</div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>&#160;    <span class="comment">// create both objects</span></div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>&#160;    analogTimer[i]-&gt;timer = <span class="keyword">new</span> IntervalTimer;</div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>&#160;    analogTimer[i]-&gt;buffer = <span class="keyword">new</span> <a class="code" href="class_ring_buffer.html">RingBuffer</a>;</div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>&#160;</div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>&#160;    analogTimer[i]-&gt;period = period;</div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>&#160;    analogTimer[i]-&gt;isDiff = <span class="keyword">true</span>;</div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>&#160;</div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>&#160;        <span class="comment">// point the adc_isr to the function that takes care of the timers</span></div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>&#160;        <a class="code" href="class_a_d_c.html#acd2190a0fffb121216e5f5bb2d84fc8e">analogTimer_ADC_Callback</a> = &amp;ADC_callback;</div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>&#160;    <span class="comment">// enable interrupts</span></div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>&#160;        <a class="code" href="class_a_d_c.html#a66a26ded71b7b938e3fc8826c4579092">enableInterrupts</a>();</div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>&#160;</div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>&#160;    <span class="comment">// start timerPin # i</span></div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>&#160;    <span class="keywordtype">int</span> result = analogTimer[i]-&gt;timer-&gt;begin(analogTimerCallback[i], period);</div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>&#160;    <span class="keywordflow">if</span>(!result) { <span class="comment">// begin returns true/false</span></div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>&#160;            <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a12a745ce8b6499612828e575e39c46b0">ANALOG_TIMER_ERROR</a>;</div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>&#160;    }</div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>&#160;</div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>&#160;    <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>&#160;}</div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>&#160;</div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>&#160;</div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>&#160;<span class="comment">// Stops the periodic measurement</span></div>
<div class="line"><a name="l01054"></a><span class="lineno"><a class="line" href="class_a_d_c.html#abff12774fa2c93383e37c8bcf7ae5bfb"> 1054</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_a_d_c.html#abff12774fa2c93383e37c8bcf7ae5bfb">ADC::stopAnalogTimer</a>(uint8_t pin) {</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>&#160;    <span class="comment">// find corresponding timerPin</span></div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>&#160;    <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>&#160;    <span class="keywordflow">while</span>( (i&lt;<a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a>) &amp;&amp; (analogTimer[i]-&gt;pinNumber!=pin) ) {i++;}</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>&#160;    <span class="keywordflow">if</span>( i == <a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a> ) { <span class="comment">// Timer doesn&#39;t exist</span></div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>&#160;    }</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>&#160;</div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>&#160;    <span class="comment">// stop timerPin # i</span></div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>&#160;    analogTimer[i]-&gt;timer-&gt;end();</div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>&#160;    analogTimer[i]-&gt;pinNumber = -1; <span class="comment">// timerPin i is free now</span></div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>&#160;</div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>&#160;    <span class="keyword">delete</span> analogTimer[i]-&gt;timer;</div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>&#160;    <span class="keyword">delete</span> analogTimer[i]-&gt;buffer;</div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>&#160;</div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>&#160;    <span class="comment">// check if there are more analog timers in use</span></div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>&#160;    i = 0;</div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>&#160;    <span class="keywordflow">while</span>( (i&lt;<a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a>) &amp;&amp; (analogTimer[i]-&gt;pinNumber!=-1) ) {i++;}</div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>&#160;    <span class="keywordflow">if</span>( i == <a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a> ) { <span class="comment">// no more analog timers</span></div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>&#160;        <a class="code" href="class_a_d_c.html#ad8acae7988973bdede138deea567623a">disableInterrupts</a>();</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>&#160;        <span class="comment">// point the adc_isr to the function that does nothing</span></div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>&#160;        <a class="code" href="class_a_d_c.html#acd2190a0fffb121216e5f5bb2d84fc8e">analogTimer_ADC_Callback</a> = &amp;voidFunction;</div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>&#160;    }</div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>&#160;</div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>&#160;</div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>&#160;    <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>&#160;}</div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>&#160;</div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>&#160;<span class="comment">// Returns the oldest value of the ring buffer where the periodic measurements go</span></div>
<div class="line"><a name="l01083"></a><span class="lineno"><a class="line" href="class_a_d_c.html#ac46fe3df35b3f92398f1d0d6bd2a72ac"> 1083</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_a_d_c.html#ac46fe3df35b3f92398f1d0d6bd2a72ac">ADC::getTimerValue</a>(uint8_t pin) {</div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>&#160;    <span class="comment">// find corresponding timerPin</span></div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>&#160;    <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>&#160;    <span class="keywordflow">while</span>( (i&lt;<a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a>) &amp;&amp; (analogTimer[i]-&gt;pinNumber!=pin) ) {i++;}</div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>&#160;    <span class="keywordflow">if</span>( i == <a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a> ) { <span class="comment">// Timer not found with that pin number!</span></div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a12a745ce8b6499612828e575e39c46b0">ANALOG_TIMER_ERROR</a>;</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>&#160;    }</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>&#160;</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>&#160;    <span class="keywordflow">return</span> analogTimer[i]-&gt;buffer-&gt;read(); <span class="comment">// read the oldest value in the buffer</span></div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>&#160;}</div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>&#160;</div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>&#160;<span class="comment">// Is the oldest value also the last one?</span></div>
<div class="line"><a name="l01095"></a><span class="lineno"><a class="line" href="class_a_d_c.html#ae834c6a54ed17ed9028d3203b1761da8"> 1095</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_a_d_c.html#ae834c6a54ed17ed9028d3203b1761da8">ADC::isTimerLastValue</a>(uint8_t pin) {</div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>&#160;    <span class="comment">// find corresponding timerPin</span></div>
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>&#160;    <span class="keywordtype">int</span> i = 0;</div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>&#160;    <span class="keywordflow">while</span>( (i&lt;<a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a>) &amp;&amp; (analogTimer[i]-&gt;pinNumber!=pin) ) {i++;}</div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>&#160;    <span class="keywordflow">if</span>( i == <a class="code" href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a> ) { <span class="comment">// Timer not found with that pin number!</span></div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="_a_d_c_8h.html#a12a745ce8b6499612828e575e39c46b0">ANALOG_TIMER_ERROR</a>;</div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>&#160;    }</div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>&#160;</div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>&#160;    <span class="comment">//return timerPin[i].buffer-&gt;isEmpty();</span></div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>&#160;    <span class="keywordflow">return</span> analogTimer[i]-&gt;buffer-&gt;isEmpty();</div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>&#160;}</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>&#160;</div>
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>&#160;</div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>&#160;</div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>&#160;<span class="comment">/* Is the ADC converting at the moment?</span></div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>&#160;<span class="comment">*  Returns 1 if yes, 0 if not</span></div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l01112"></a><span class="lineno"><a class="line" href="class_a_d_c.html#ae9f0fe4ddfa32cd8eb5a6fb085c06668"> 1112</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_a_d_c.html#ae9f0fe4ddfa32cd8eb5a6fb085c06668">ADC::isConverting</a>() {</div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>&#160;</div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>&#160;    <span class="keywordflow">return</span> (ADC0_SC2 &amp; ADC_SC2_ADACT) &gt;&gt; 7;</div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>&#160;}</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>&#160;</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>&#160;</div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>&#160;<span class="comment">/* Is an ADC conversion ready?</span></div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>&#160;<span class="comment">*  Returns 1 if yes, 0 if not.</span></div>
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>&#160;<span class="comment">*  When a value is read this function returns 0 until a new value exists</span></div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>&#160;<span class="comment">*  So it only makes sense to call it before analogRead(), analogReadContinuous() or analogReadDifferential()</span></div>
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l01123"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a8d52416818b784f7a0600e83442909b7"> 1123</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_a_d_c.html#a8d52416818b784f7a0600e83442909b7">ADC::isComplete</a>() {</div>
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>&#160;</div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>&#160;    <span class="keywordflow">return</span> (ADC0_SC1A &amp; ADC_SC1_COCO) &gt;&gt; 7;</div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>&#160;}</div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>&#160;</div>
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>&#160;</div>
<div class="line"><a name="l01129"></a><span class="lineno"><a class="line" href="class_a_d_c.html#a21b77150e3b960a4232a755143c64be2"> 1129</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_a_d_c.html#a21b77150e3b960a4232a755143c64be2">ADC::isDifferential</a>() {</div>
<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>&#160;    <span class="keywordflow">return</span> (ADC0_SC1A &amp; ADC_SC1_DIFF) &gt;&gt; 5;</div>
<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>&#160;}</div>
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>&#160;</div>
<div class="line"><a name="l01133"></a><span class="lineno"><a class="line" href="class_a_d_c.html#ae3a0e2b7062366b6cc0f691c9d0acd46"> 1133</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_a_d_c.html#ae3a0e2b7062366b6cc0f691c9d0acd46">ADC::isContinuous</a>() {</div>
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>&#160;    <span class="keywordflow">return</span> (ADC0_SC3 &amp; ADC_SC3_ADCO) &gt;&gt; 3;</div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>&#160;}</div>
<div class="ttc" id="class_a_d_c_html_ae9f0fe4ddfa32cd8eb5a6fb085c06668"><div class="ttname"><a href="class_a_d_c.html#ae9f0fe4ddfa32cd8eb5a6fb085c06668">ADC::isConverting</a></div><div class="ttdeci">static bool isConverting()</div><div class="ttdoc">Is the ADC converting at the moment? </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l01112">ADC.cpp:1112</a></div></div>
<div class="ttc" id="class_a_d_c_html_a332029f903b3d92cb52d2d8b1efe5ed6"><div class="ttname"><a href="class_a_d_c.html#a332029f903b3d92cb52d2d8b1efe5ed6">ADC::startContinuous</a></div><div class="ttdeci">void startContinuous(uint8_t pin)</div><div class="ttdoc">Starts continuous conversion on the pin. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00724">ADC.cpp:724</a></div></div>
<div class="ttc" id="class_a_d_c_html_a60b6e21403b1f30984f63832c0562960"><div class="ttname"><a href="class_a_d_c.html#a60b6e21403b1f30984f63832c0562960">ADC::ADC</a></div><div class="ttdeci">ADC()</div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00066">ADC.cpp:66</a></div></div>
<div class="ttc" id="class_a_d_c_html_ad48e3b4b69170965fc4fe70ef042c099"><div class="ttname"><a href="class_a_d_c.html#ad48e3b4b69170965fc4fe70ef042c099">ADC::disableCompare</a></div><div class="ttdeci">void disableCompare()</div><div class="ttdoc">Disable the compare function. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00360">ADC.cpp:360</a></div></div>
<div class="ttc" id="class_a_d_c_html_ae834c6a54ed17ed9028d3203b1761da8"><div class="ttname"><a href="class_a_d_c.html#ae834c6a54ed17ed9028d3203b1761da8">ADC::isTimerLastValue</a></div><div class="ttdeci">bool isTimerLastValue(uint8_t pin)</div><div class="ttdoc">Is the oldest value also the last one? </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l01095">ADC.cpp:1095</a></div></div>
<div class="ttc" id="class_a_d_c_html_a7759873f09a8369e41f12280234a383b"><div class="ttname"><a href="class_a_d_c.html#a7759873f09a8369e41f12280234a383b">ADC::startSingleRead</a></div><div class="ttdeci">static int startSingleRead(uint8_t pin)</div><div class="ttdoc">Starts an analog measurement on the pin and enables interrupts. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00607">ADC.cpp:607</a></div></div>
<div class="ttc" id="class_a_d_c_html_a5bc29134a1079cc1c232a436c3778f88"><div class="ttname"><a href="class_a_d_c.html#a5bc29134a1079cc1c232a436c3778f88">ADC::enableCompare</a></div><div class="ttdeci">void enableCompare(int16_t compValue, int greaterThan)</div><div class="ttdoc">Enable the compare function to a single value. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00324">ADC.cpp:324</a></div></div>
<div class="ttc" id="class_a_d_c_html_a21b77150e3b960a4232a755143c64be2"><div class="ttname"><a href="class_a_d_c.html#a21b77150e3b960a4232a755143c64be2">ADC::isDifferential</a></div><div class="ttdeci">static bool isDifferential()</div><div class="ttdoc">Is the ADC in differential mode? </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l01129">ADC.cpp:1129</a></div></div>
<div class="ttc" id="class_a_d_c_html_acd2190a0fffb121216e5f5bb2d84fc8e"><div class="ttname"><a href="class_a_d_c.html#acd2190a0fffb121216e5f5bb2d84fc8e">ADC::analogTimer_ADC_Callback</a></div><div class="ttdeci">static void(* analogTimer_ADC_Callback)(void)</div><div class="ttdoc">Points to the function that takes care of the analogTimers. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8h_source.html#l00284">ADC.h:284</a></div></div>
<div class="ttc" id="class_a_d_c_html_a6780adeda5597efe5c09e6dfb5f49ae1"><div class="ttname"><a href="class_a_d_c.html#a6780adeda5597efe5c09e6dfb5f49ae1">ADC::startSingleDifferential</a></div><div class="ttdeci">static int startSingleDifferential(uint8_t pinP, uint8_t pinN)</div><div class="ttdoc">Start a differential conversion between two pins (pinP - pinN) and enables interrupts. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00662">ADC.cpp:662</a></div></div>
<div class="ttc" id="class_a_d_c_html_ae3a0e2b7062366b6cc0f691c9d0acd46"><div class="ttname"><a href="class_a_d_c.html#ae3a0e2b7062366b6cc0f691c9d0acd46">ADC::isContinuous</a></div><div class="ttdeci">static bool isContinuous()</div><div class="ttdoc">Is the ADC in continuous mode? </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l01133">ADC.cpp:1133</a></div></div>
<div class="ttc" id="_a_d_c_8h_html_a7eb883900caaf62368bacfde26035535"><div class="ttname"><a href="_a_d_c_8h.html#a7eb883900caaf62368bacfde26035535">MAX_ANALOG_TIMERS</a></div><div class="ttdeci">#define MAX_ANALOG_TIMERS</div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8h_source.html#l00026">ADC.h:26</a></div></div>
<div class="ttc" id="_a_d_c_8h_html_a810b46bdaa73057d834142229111adc5"><div class="ttname"><a href="_a_d_c_8h.html#a810b46bdaa73057d834142229111adc5">ADC_ERROR_VALUE</a></div><div class="ttdeci">#define ADC_ERROR_VALUE</div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8h_source.html#l00059">ADC.h:59</a></div></div>
<div class="ttc" id="class_a_d_c_html_a254cfc7c511bc29447d2a692433efe24"><div class="ttname"><a href="class_a_d_c.html#a254cfc7c511bc29447d2a692433efe24">ADC::getMaxValue</a></div><div class="ttdeci">uint32_t getMaxValue()</div><div class="ttdoc">Returns the maximum value for a measurement. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00255">ADC.cpp:255</a></div></div>
<div class="ttc" id="_a_d_c_8h_html"><div class="ttname"><a href="_a_d_c_8h.html">ADC.h</a></div></div>
<div class="ttc" id="class_a_d_c_html_aefd878291d0c14aa524df99af5a63148"><div class="ttname"><a href="class_a_d_c.html#aefd878291d0c14aa524df99af5a63148">ADC::~ADC</a></div><div class="ttdeci">~ADC()</div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00093">ADC.cpp:93</a></div></div>
<div class="ttc" id="class_a_d_c_html_a67ad2a6883cfffb1e4876e678ba7bb8a"><div class="ttname"><a href="class_a_d_c.html#a67ad2a6883cfffb1e4876e678ba7bb8a">ADC::analogRead</a></div><div class="ttdeci">static int analogRead(uint8_t pin)</div><div class="ttdoc">Returns the analog value of the pin. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00370">ADC.cpp:370</a></div></div>
<div class="ttc" id="class_a_d_c_html_ac46fe3df35b3f92398f1d0d6bd2a72ac"><div class="ttname"><a href="class_a_d_c.html#ac46fe3df35b3f92398f1d0d6bd2a72ac">ADC::getTimerValue</a></div><div class="ttdeci">int getTimerValue(uint8_t pin)</div><div class="ttdoc">Returns the oldest value of the ring buffer where the periodic measurements go. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l01083">ADC.cpp:1083</a></div></div>
<div class="ttc" id="_a_d_c_8h_html_af181c4b5c617516517400c427494e7e7"><div class="ttname"><a href="_a_d_c_8h.html#af181c4b5c617516517400c427494e7e7">ADC_ERROR_DIFF_VALUE</a></div><div class="ttdeci">#define ADC_ERROR_DIFF_VALUE</div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8h_source.html#l00058">ADC.h:58</a></div></div>
<div class="ttc" id="class_a_d_c_html_aa80d9ebc6a60605e1b9a25f2db8734e9"><div class="ttname"><a href="class_a_d_c.html#aa80d9ebc6a60605e1b9a25f2db8734e9">ADC::setAveraging</a></div><div class="ttdeci">void setAveraging(uint8_t num)</div><div class="ttdoc">Set the number of averages. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00263">ADC.cpp:263</a></div></div>
<div class="ttc" id="class_a_d_c_html_a05857ba731f9b2b0ae35bef5c5cddd9e"><div class="ttname"><a href="class_a_d_c.html#a05857ba731f9b2b0ae35bef5c5cddd9e">ADC::stopContinuous</a></div><div class="ttdeci">void stopContinuous()</div><div class="ttdoc">Stops continuous conversion. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00817">ADC.cpp:817</a></div></div>
<div class="ttc" id="class_a_d_c_html_a6b8f4f571b7729d9da50b72ab93ec023"><div class="ttname"><a href="class_a_d_c.html#a6b8f4f571b7729d9da50b72ab93ec023">ADC::setResolution</a></div><div class="ttdeci">static void setResolution(uint8_t bits)</div><div class="ttdoc">Change the resolution of the measurement. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00199">ADC.cpp:199</a></div></div>
<div class="ttc" id="class_a_d_c_html_ae97b6fffe4527e799006c11a9426f468"><div class="ttname"><a href="class_a_d_c.html#ae97b6fffe4527e799006c11a9426f468">ADC::readSingle</a></div><div class="ttdeci">static int readSingle()</div><div class="ttdoc">Reads the analog value of a single conversion. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00715">ADC.cpp:715</a></div></div>
<div class="ttc" id="class_a_d_c_html_aee940d66774b13a343e85c358ee6cd45"><div class="ttname"><a href="class_a_d_c.html#aee940d66774b13a343e85c358ee6cd45">ADC::enableCompareRange</a></div><div class="ttdeci">void enableCompareRange(int16_t lowerLimit, int16_t upperLimit, int insideRange, int inclusive)</div><div class="ttdoc">Enable the compare function to a range. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00336">ADC.cpp:336</a></div></div>
<div class="ttc" id="class_a_d_c_html_a8d52416818b784f7a0600e83442909b7"><div class="ttname"><a href="class_a_d_c.html#a8d52416818b784f7a0600e83442909b7">ADC::isComplete</a></div><div class="ttdeci">static bool isComplete()</div><div class="ttdoc">Is an ADC conversion ready? </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l01123">ADC.cpp:1123</a></div></div>
<div class="ttc" id="class_a_d_c_html_a58af22e8f95c1d2b1560153f906d1038"><div class="ttname"><a href="class_a_d_c.html#a58af22e8f95c1d2b1560153f906d1038">ADC::disableDMA</a></div><div class="ttdeci">void disableDMA()</div><div class="ttdoc">Disable ADC DMA request. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00314">ADC.cpp:314</a></div></div>
<div class="ttc" id="class_ring_buffer_html"><div class="ttname"><a href="class_ring_buffer.html">RingBuffer</a></div><div class="ttdef"><b>Definition:</b> <a href="_ring_buffer_8h_source.html#l00015">RingBuffer.h:15</a></div></div>
<div class="ttc" id="_a_d_c_8cpp_html_a515b2edb92623afe10d1360601de1fba"><div class="ttname"><a href="_a_d_c_8cpp.html#a515b2edb92623afe10d1360601de1fba">__attribute__</a></div><div class="ttdeci">void __attribute__((weak)) adc0_isr(void)</div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00024">ADC.cpp:24</a></div></div>
<div class="ttc" id="class_a_d_c_html_a013c9c109b7ccd038a5939866fe777ee"><div class="ttname"><a href="class_a_d_c.html#a013c9c109b7ccd038a5939866fe777ee">ADC::startContinuousDifferential</a></div><div class="ttdeci">void startContinuousDifferential(uint8_t pinP, uint8_t pinN)</div><div class="ttdoc">Starts continuous conversion between the pins (pinP-pinN). </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00761">ADC.cpp:761</a></div></div>
<div class="ttc" id="class_a_d_c_html_a66a26ded71b7b938e3fc8826c4579092"><div class="ttname"><a href="class_a_d_c.html#a66a26ded71b7b938e3fc8826c4579092">ADC::enableInterrupts</a></div><div class="ttdeci">static void enableInterrupts()</div><div class="ttdoc">Enable interrupts. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00290">ADC.cpp:290</a></div></div>
<div class="ttc" id="class_a_d_c_html_a3d365d0e397a9d2a5f23a117a4a7ef26"><div class="ttname"><a href="class_a_d_c.html#a3d365d0e397a9d2a5f23a117a4a7ef26">ADC::getResolution</a></div><div class="ttdeci">static uint8_t getResolution()</div><div class="ttdoc">Returns the resolution of the ADC. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00248">ADC.cpp:248</a></div></div>
<div class="ttc" id="class_a_d_c_html_a03e9af3db07ad97e401045a848aabf17"><div class="ttname"><a href="class_a_d_c.html#a03e9af3db07ad97e401045a848aabf17">ADC::analogReadContinuous</a></div><div class="ttdeci">static int analogReadContinuous()</div><div class="ttdoc">Reads the analog value of a continuous conversion. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00803">ADC.cpp:803</a></div></div>
<div class="ttc" id="_a_d_c_8h_html_a12a745ce8b6499612828e575e39c46b0"><div class="ttname"><a href="_a_d_c_8h.html#a12a745ce8b6499612828e575e39c46b0">ANALOG_TIMER_ERROR</a></div><div class="ttdeci">#define ANALOG_TIMER_ERROR</div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8h_source.html#l00062">ADC.h:62</a></div></div>
<div class="ttc" id="class_a_d_c_html_abff12774fa2c93383e37c8bcf7ae5bfb"><div class="ttname"><a href="class_a_d_c.html#abff12774fa2c93383e37c8bcf7ae5bfb">ADC::stopAnalogTimer</a></div><div class="ttdeci">void stopAnalogTimer(uint8_t pin)</div><div class="ttdoc">Stops the periodic measurement. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l01054">ADC.cpp:1054</a></div></div>
<div class="ttc" id="class_a_d_c_html_af093122742f6ac86684cb983d4293721"><div class="ttname"><a href="class_a_d_c.html#af093122742f6ac86684cb983d4293721">ADC::startAnalogTimer</a></div><div class="ttdeci">int startAnalogTimer(uint8_t pin, uint32_t period)</div><div class="ttdoc">Starts a periodic measurement using the IntervalTimer library. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00946">ADC.cpp:946</a></div></div>
<div class="ttc" id="class_a_d_c_html_ad8acae7988973bdede138deea567623a"><div class="ttname"><a href="class_a_d_c.html#ad8acae7988973bdede138deea567623a">ADC::disableInterrupts</a></div><div class="ttdeci">static void disableInterrupts()</div><div class="ttdoc">Disable interrupts. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00298">ADC.cpp:298</a></div></div>
<div class="ttc" id="class_a_d_c_html_ad3a40837cf36ad7c7c1efe635523c4c4"><div class="ttname"><a href="class_a_d_c.html#ad3a40837cf36ad7c7c1efe635523c4c4">ADC::analogReadDifferential</a></div><div class="ttdeci">static int analogReadDifferential(uint8_t pinP, uint8_t pinN)</div><div class="ttdoc">Reads the differential analog value of two pins (pinP - pinN). </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00487">ADC.cpp:487</a></div></div>
<div class="ttc" id="class_a_d_c_html_a3871e90219238c6319c8b6bf801b5fd7"><div class="ttname"><a href="class_a_d_c.html#a3871e90219238c6319c8b6bf801b5fd7">ADC::setReference</a></div><div class="ttdeci">void setReference(uint8_t type)</div><div class="ttdoc">Set the voltage reference you prefer, default is vcc. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00173">ADC.cpp:173</a></div></div>
<div class="ttc" id="class_a_d_c_html_a10b9e674ed487b81160687e38fafbb59"><div class="ttname"><a href="class_a_d_c.html#a10b9e674ed487b81160687e38fafbb59">ADC::enableDMA</a></div><div class="ttdeci">void enableDMA()</div><div class="ttdoc">Enable DMA request. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l00307">ADC.cpp:307</a></div></div>
<div class="ttc" id="class_a_d_c_html_adc1fe1cb2942e7aa12ea4737a529207c"><div class="ttname"><a href="class_a_d_c.html#adc1fe1cb2942e7aa12ea4737a529207c">ADC::startAnalogTimerDifferential</a></div><div class="ttdeci">int startAnalogTimerDifferential(uint8_t pinP, uint8_t pinN, uint32_t period)</div><div class="ttdoc">Starts a periodic measurement using the IntervalTimer library. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_c_8cpp_source.html#l01003">ADC.cpp:1003</a></div></div>
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